[Suicide Junkie]

In Mozilla, its:
Navigator -> Tabbed Browsing -> [X] Hide the tab bar when only one tab is open.


CTRL-T should open a new tab, and there are options for middle-click and CTRL-enter to open their targets in a new tab too.
I never click the new tab icon, because these other options are so much quicker. Either middle clicking links, or CTRL-T followed immediately by typing a URL.


BTW, I have never lost bookmarks in Moz, even in the rare instances of crashing.